Cleanup: remove unused internet and system pages for chrome os options.

chrome/browser/ui/gtk/options/content_page_gtk.cc

Index: chrome/browser/ui/gtk/options/content_page_gtk.cc
diff --git a/chrome/browser/ui/gtk/options/content_page_gtk.cc b/chrome/browser/ui/gtk/options/content_page_gtk.cc
index c29f530906aed08b5d97e9d683aea7522fbe514e..bbe2fdc5e7bb77070793965629e253567e8d4f9a 100644
--- a/chrome/browser/ui/gtk/options/content_page_gtk.cc
+++ b/chrome/browser/ui/gtk/options/content_page_gtk.cc
@@ -31,10 +31,6 @@
 #include "grit/locale_settings.h"
 #include "ui/base/l10n/l10n_util.h"
 
-#if defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/options/options_window_view.h"
-#endif  // defined(OS_CHROMEOS)
-
 namespace {
 
 // Background color for the status label when it's showing an error.
@@ -497,12 +493,6 @@ void ContentPageGtk::OnResetDefaultThemeButtonClicked(GtkWidget* widget) {
 void ContentPageGtk::OnGetThemesButtonClicked(GtkWidget* widget) {
   UserMetricsRecordAction(UserMetricsAction("Options_ThemesGallery"),
                           profile()->GetPrefs());
-#if defined(OS_CHROMEOS)
-  // Close options dialog for ChromeOS becuase it is always stacked on top
-  // of browser window and blocks user's view.
-  chromeos::CloseOptionsWindow();
-#endif  // defined(OS_CHROMEOS)
-
   BrowserList::GetLastActive()->OpenThemeGalleryTabAndActivate();
 }